Ventilator.



A JULIAN HOLLAND, OF NEW YORK, N. Y.

'To allwlwm t may concern:

Be it known that I,- JULIAN HoLnAND, a citizen of the United States of Amer1ca,.re

siding in the borough of Manhattan, city,

windows, panels and county, and State of New York, have in`- vented certain 'new' and useful Improverality of vanes are secured and which is slidable in the opening in which the ventilator is placed, thejvanes in the two frames being so proportioned and arranged that when the I slidable frame is moved in one direction the opposing vanes co-act so as to completely close the space occupied by the ventilator and when moved in-the 'opposite direction passage ways for the passage of air are left between the opposing vanes.

The object of the invention is to provide a ventilator throughl which when open there is no direct line of vision or direct line for i t e space withiinthe ventilator being ven-l the passage of li ht or air.

' A further ob]e ct of the invention is to provide a ventilator `for the closures of o enings which will not permit entrance to tilated.'

A further object of the invention is to provide a ventilator of relatively simple and economical construction, the parts of which. are standardized and' interchangei spicuous;

able. v-

*A 'further' object ,of the .invention is to provide a ventilator .through which when open a person on one side 'can not look and see what is on the other side.

A further object of the invention is to pro-` vide a ventilator which when closed will preventthe passage of air or gases. 'l A furtherv object of the invention is `to rovide a ventilator which is automatically astened-against unaut orized operation and the means for the operation of which shall be withinfconvenient reach and not contheright showing portion to the left showing it open, a portion of the sides of the opening in which l channel irons; but the wings, 13, of the vanes,

Specification oi Letters Patent. Patented Feb. 5, 1918. Applieationled 119.1723, 191?. Serial No. 170,396. L v

While a preferred form of the invention is illustrated in the accompanying drawings, it

will be understood that various changes and alterations can be made in the arrangement,

positioning and construction of the several parts without departing from the spirit of the invention;

. Figure 1 isa top lan view, the ortionto th e ventilator c osed and the ventilator is placed being shown in sec-- tion. Fig. 2I is a vertical sectional view on the line w-a Fig. 3 looking as the arrow points, showing tlie ventilator placed in ado or, portions of the door above and below being shown. Fig. 3 is an enlarged plan view of a portion of the ventilator yshowing i in f ull lines the movable frame in the open position and in dotted lines the same in the' closedposition Fig. 4 is a vertical sectional view similar-to Fig. 2 of a modified form of the invention. i

Similar reference numbers refer to similar parts throughout the several views.'

In the accompanying drawings, the` opening, 1`, in which the ventilator is to be placed is provided with recesses, 2, at the top, bottom and sides. A frame, 3, adapted to be seated in the recess 2 atthe bottom of the opening, 1, and to extend into the recesses, 2, at the to and sides of thel opening, 1, is provided. he frame,l 3, has a top and bottom member, 4e, to which a plurality of vanes, 5,- are suitably secured, as by rivets, 6. The

- vanes, 5, shown in the drawings, are in the f form in lcross section alternately of single' f andy double channel irons, the channels in themselves be' curvedlaterally. A `second-` frame, 9, is provided which has a top and bottom member, 1,0, 'toM which a plurality ofA vanes, 11, are suitably secured, as by rivets, 12. The vanes- 11, shown in the drawings,l are in the form in cross section of single 11, may be at an angle other than ,'a right angle to the body,

11, are suitably'spaced on the top and bottom members, 10, of the frame, 9, so that when the ven'lator is open,

y 14, of the vanes, 11, and 4 the wings, 13, maythemselves be vcurved laterally. The vanes,

' Athe vanes, 11, ma

centrally into the openings between the wings, 7 ,j of 'the vanes, 5. The vanes, 5, and if desired be formed of either plain materlal or crimped, corrugated, or paneled material. Suitable means on which the bottom member, 10, of the frame, 9, rests are provided permitting the reciprocating in the-opening,

which means are shown in the drawings as rollers, 15, mounted in casings, 16, sunk in 'j one side lof the bottom ofthe recess 2, at the bottom of the opening, 1. Suitable means, as a handle, 17, is suitably secured, as by a rivet," 18, to thebottom member, 10, of the frame, 9, and-extends into the room o r space to be ventilated at a convenient height to be easily reached for the operation of the ventilator. Preferably the word Open is stamped or otherwise placed near the bottom of the body of one of the vanes, 5, substantially in the middle ofthe ventilator on the side of the opening of the vane, 5, to permit .of the operators seeing whether the ventilator is o en or closed.

A modified orm of the invention is shown 1n Fig. 4, in which the topand bottom irons, bers,

members, 4 and 10, are in the form of angle the angle of the top andbottom mem- 10, extending nearly to the adjacent end of the angle of the members, 4, and means shown as rollers, 18, mounted in a casing, 19, having upwardly projecting lugs,

20, adapted to receive between them the member, 10, are secured in the recesses, 2, at the top and bottom ofthe opening, 1.

The operation of the device is simple. On moving the handle, 17 in one direction the wings, 13, ofthe vanes, 11,'abut one against a wing, 13, of the vanes, 11, in shape in cross section of a single channel iron extending in the opposite direction and one against a wing, of the vanes, 5, in the shape in cross section `of a double channel iron extending. in the same direction thereby closing the ventilator. On moving the handle 17, in the opposite direction, the

1, of the frame, 9,.

wings, 13, of the vanes, 11, extend one into the opening between the Wings, 7, of the` vanes, 5, in shape in cross section o f a single channel iron and the other wing, 13, of the vanes, 11, extendsinto the openin between the wings, 7, of the vanes, 5, in s ape in cross section of single and double channel irons respectively, thereby opening the ventilator to the indirect passage of air.

I claim 1. A ventilator comprising a xed frame provided with vanes alternately in shape in `cross section of singleand double channel lrons land a movable frame provided with vanes in shape in'cross section of single channel irons disposed at such intervals that the wings of the movable vanes will normally project midway between the wings of the opposlte fixed vanes.

2. A ventilator comprising two frames adapted to be placed in the opening provided for the ventilator, one frame being fixed and the other movable, said frames provided with vanes having wings and the wings of the vanes on the movable frame extending into the openings between the wings of the vanes on the fixed frame and adapted when the movable frame is moved in one direction to abut against the oppositely extending wings and when the movable frame is moved in the opposite direction to provide indirect passages for the air.v

3. In a ventilator the combination of fixed vanes in cross section of the shape of double channel irons and movable vanes in cross section of the shape of single channel irons, the movable vanes being so disposed that their projecting portions will lie normally in the opposite openings of the fixed vanes, and means for moving the` movablejvanes until their projections abut agamst the corresponding projections of the fixed vanes.

E. S. LYMAN, HARTWELL P. HEATH. 

